A jig includes mold parts that have a contact surface of a cylindrical part of a material to be molded having a shape complying with the inner peripheral surface of the cylindrical par and are arranged in a direction crossing one direction; a bladder having on a side opposite to the contact surfaces of plurality of mold parts relative to the mold parts, capable of accommodating a fluid therein, and expandable/retractable according to a pressure of the accommodated fluid; a joining part that joins the plurality of mold parts and the bladder; and a connection part that connects a one-side mold part and an another side mold part adjacent to the one-side mold part among a plurality of mold parts to each other and restricts an interval between the one-side mold part and the other-side mold part in a direction crossing the one direction with a prescribed range.

A method for assembling a skin and a flange of a stiffener. The periphery of the contact between the skin and the flange of the stiffener is sealed by applying a bead of adhesive on the flange of the stiffener in contact with the skin. A first and second orifices are made in the skin. The orifices open at the interface between the skin and the flange of the stiffener. The adhesive is injected through the first orifice at the interface between the skin and the flange of the stiffener while keeping the skin in contact with the stiffener until the interface between the skin and the stiffener is completely filled with the adhesive.

Method for manufacturing a reinforced part, including the steps of: producing a support structure and then covering the support structure, at least partially, with at least one composite material including reinforcement fibres, with local adhesion of the support structure and/or the composite material, during positioning thereof, to ensure its retention on the support structure, the support structure being an integral part of the reinforcing part.

A connecting shaft including a first shaft made of metal, a second shaft made of resin, and a collar made of metal including a first fitting portion fitting on an outer peripheral surface of the first shaft and a second fitting portion fitting on an outer peripheral surface of the second shaft. A gap between the outer peripheral surface of the second shaft and an inner peripheral surface of the second fitting portion is filled with an adhesive agent, and the adhesive agent is applied to an outer peripheral surface of the collar to cover an end face of the second fitting portion in an axial direction.

A module mount having at least one module that can be mounted on the module mount, wherein the module can be mounted on the module mount via at least one caulking element, such that the respective caulking element, which is composed of a thermoplastic, extends through a hole in a section of the respective module that can be mounted on the module mount made of a thermoplastic or thermoset, and is hot-caulked at an end projecting out of the hole, wherein at least one projection is formed on the section of the respective module that can be mounted on the module mount in the region of the respective hole of the section of the respective module that can be mounted on the module mount made of the thermoplastic or thermoset, which projection is engaged in a press fit with the hot-caulked end of the respective caulking element.

A wind turbine blade 2 comprises a profiled contour including a leading edge 34 and a trailing edge 33 as well as a pressure side and a suction side. The profiled contour is formed by a first shell part 10 and a second shell part 15 being bonded together in a bonding region between the first and the second shell part by a curable bonding means 40. The first and the second shell part 10; 15 are formed in a fiber-reinforced polymer. The wind turbine blade further comprises resistive heating means 50 being arranged in thermal connection with the bonding means 40 such that the resistive heating means 50 supplies heat for curing of the curable bonding means 40 during assembling of the wind turbine blade.

In a preferred embodiment, a composite panel with a smooth outer surface, ready for painting with or without addition of primer, may be created by constructing a panel layup assembly upon a mold, the panel layup assembly including a composite panel having a core and a resin formulation, and a release film between the mold and the composite panel, where a smooth release surface of the release film is in contact with the composite panel upon construction; initiating curing of the composite panel at a first temperature within a lowermost ten percent of a curing temperature range of the resin formulation; continuing curing of the composite panel at a second temperature above the lowermost ten percent of the curing temperature range; and completing curing of the composite panel at a third temperature below the second temperature.

A three-dimensional object includes an outer-layer member and an inner structural member. The outer-layer member is a layer to constitute the surface of the three-dimensional object, and includes an inner space. The outer-layer member is made up of a plurality of divided outer-layer pieces formed of build material, which is functional ink ejected from a droplet ejection head and cured. The inner structural member is disposed in the inner space of the outer-layer member and configured to support the outer-layer member.

A process for joining fiber composite materials using self-piercing rivets. The process includes contacting first and second panels. The second panel is a fiber composite material. The process further includes elevating a temperature of only a fastening portion of the second panel. The process also includes placing the first and second panels on a die and joining the first and second panels with one or more rivets while the fastening portion is at an elevated temperature.

A friction welding method for fastening a connection bushing, such as a threaded bushing for example, in a housing. In order to improve the quality of the connection, the connection bushing is attached to the housing using a friction welding element. The friction welding element consists of the connection bushing, on which a friction welding shell with a radially outer friction welding contour is formed or molded. Connecting and sealing portions are produced between the friction welding element and the housing during the friction welding process by means of a special design of the friction welding contour.